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Kos

$619+ Cheap flights from Dulles Intl (IAD) to Kos (KGS)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — KGS
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Dulles Intl to Kos

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Kos (KGS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 12, 2025.

Round-trip from

$619
(SWISS)
From Washington, D.C. Dulles Intl to Kos
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Find flight deals from Dulles Intl to Kos

Cheapest flights from Dulles Intl to Kos
Explore the most affordable flight options available from Dulles Intl to Kos. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This SWISS deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/158:45 pmIAD - KGS
1 stop15h 55mSWISS
Mon 9/2911:00 amKGS - IAD
1 stop36h 15mSWISS
Deal found 6/10$619
This FlightHub deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/195:16 pmIAD - KGS
2 stops18h 49mMultiple Airlines
Mon 8/2511:00 amKGS - IAD
1 stop36h 15mMultiple Airlines
Deal found 6/11$625
This Austrian Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/145:25 pmIAD - KGS
1 stop19h 35mAustrian Airlines
Mon 9/298:50 pmKGS - IAD
1 stop24h 45mAustrian Airlines
Deal found 6/10$631
This FlightHub deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1610:20 pmIAD - KGS
1 stop13h 45mLufthansa
Mon 9/2912:40 pmKGS - IAD
2 stops31h 50mLufthansa
Deal found 6/10$654
This Brussels Airlines deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Brussels Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/45:35 pmIAD - KGS
1 stop33h 40mBrussels Airlines
Thu 8/1411:25 amKGS - IAD
1 stop33h 05mBrussels Airlines
Deal found 6/12$1,266
This British Airways deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/145:26 pmIAD - KGS
2 stops20h 34mBritish Airways
Tue 9/302:20 pmKGS - IAD
2 stops31h 40mBritish Airways
Deal found 6/10$1,438

Cheapflights Fare Finder

Customize your flight search to find flights from Dulles Intl to Kos that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 12, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Kos that are best for you.

Fly from

Dulles Intl

Fly to

Kos

Route

Depart

Return

Price

Washington, D.C.Kos

IAD - KGS

IADKGS

Washington, D.C. Dulles Intl

Mon 9/15

8:45 pm-7:40 pm

1 stop15h 55m

Kos

Mon 9/29

11:00 am-4:15 pm

1 stop36h 15m

$619

Washington, D.C.Kos

IAD - KGS

IADKGS

Washington, D.C. Dulles Intl

Tue 8/19

5:16 pm-7:05 pm

2 stops18h 49m

Kos

Mon 8/25

11:00 am-4:15 pm

1 stop36h 15m

$625

Washington, D.C.Kos

IAD - KGS

IADKGS

Washington, D.C. Dulles Intl

Sun 9/14

5:25 pm-8:00 pm

1 stop19h 35m

Kos

Mon 9/29

8:50 pm-2:35 pm

1 stop24h 45m

$631

Washington, D.C.Kos

IAD - KGS

IADKGS

Washington, D.C. Dulles Intl

Tue 9/16

10:20 pm-7:05 pm

1 stop13h 45m

Kos

Mon 9/29

12:40 pm-1:30 pm

2 stops31h 50m

$654

Washington, D.C.Kos

IAD - KGS

IADKGS

Washington, D.C. Dulles Intl

Mon 8/4

5:35 pm-10:15 am

1 stop33h 40m

Kos

Thu 8/14

11:25 am-1:30 pm

1 stop33h 05m

$1,266

Washington, D.C.Kos

IAD - KGS

IADKGS

Washington, D.C. Dulles Intl

Sun 9/14

5:26 pm-9:00 pm

2 stops20h 34m

Kos

Tue 9/30

2:20 pm-3:00 pm

2 stops31h 40m

$1,438

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Best time to book a flight from Dulles Intl to Kos

Have a flexible travel schedule? Discover the best time to fly to Kos from Dulles Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Kos

Rainfall in Kos by month

Plan your trip to Kos by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Kos ranges from 0.1 - 6.7 inches per month. January is typically the wettest month, when rainfall can reach 6.7 in. July is typically the driest time to visit Kos when rainfall is around 0.1 in.

Temperature in Kos by month

Plan your trip to Kos by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Kos, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of February, when temperatures are typically at their lowest (around 50.0 F).

Reviews of airlines servicing Kos

Get insights into the airlines that provide service to Kos. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Kos. Reviews last updated June 12, 2025.
Austrian Airlines
7.6
Good
802 reviews

Boarding

7.6

Comfort

7.3

Food

6.8

Overall

7.6

Entertainment

6.8

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Grant,Jun 2025

VIE - FRA

A delay was caused by computer malfunctions after we left the gate. It was handled well
Austrian Airlines
7.6
Good
802 reviews
Austrian Airlines
7.6
Good
802 reviews

Boarding

7.6

Comfort

7.3

Food

6.8

Overall

7.6

Entertainment

6.8

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Grant,Jun 2025

VIE - FRA

A delay was caused by computer malfunctions after we left the gate. It was handled well
SWISS
7.5
Good
1,623 reviews
Austrian Airlines
7.6
Good
802 reviews

Boarding

7.6

Comfort

7.3

Food

6.8

Overall

7.6

Entertainment

6.8

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Grant,Jun 2025

VIE - FRA

A delay was caused by computer malfunctions after we left the gate. It was handled well
Brussels Airlines
7.4
Good
355 reviews
Austrian Airlines
7.6
Good
802 reviews

Boarding

7.6

Comfort

7.3

Food

6.8

Overall

7.6

Entertainment

6.8

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Grant,Jun 2025

VIE - FRA

A delay was caused by computer malfunctions after we left the gate. It was handled well
Lufthansa
6.8
Okay
7,136 reviews
Austrian Airlines
7.6
Good
802 reviews

Boarding

7.6

Comfort

7.3

Food

6.8

Overall

7.6

Entertainment

6.8

Crew

8.1

Reviews

1 / 20
8.0
Excellent

Grant,Jun 2025

VIE - FRA

A delay was caused by computer malfunctions after we left the gate. It was handled well

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Kos. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Kos from Washington, D.C. Dulles Intl?

    Kos (KGS), located 12.8 mi from the city center, is the airport you fly into when you book flights from Washington, D.C. Dulles Intl to Kos. 0 airlines have flights to Kos from Washington, D.C. Dulles Intl on a regular basis. Booking flights from Washington, D.C. Dulles Intl to Kos should not be difficult; the airport handles an average of 0 inbound flights from Washington, D.C. Dulles Intl per day.

  • Can I find deals for flights from Dulles Intl to Kos that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Kos flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Kos?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Kos.

  • Can I find deals for business class flights from Dulles Intl to Kos?

    Yes. Cheapflights offers flight deals from Dulles Intl to Kos by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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